MCQOPTIONS
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MCQOPTIONS
This section includes 31 Mcqs, each offering curated multiple-choice questions to sharpen your VITEEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Beam of electrons can be produced with help of |
| A. | anode-ray tube |
| B. | cathode-ray tube |
| C. | inert-ray tube |
| D. | bi-charged-ray tube |
| Answer» C. inert-ray tube | |
| 2. |
Oxidation number of S in SCl2 is |
| A. | +2 |
| B. | +3 |
| C. | +4 |
| D. | +5 |
| Answer» B. +3 | |
| 3. |
Raw material required for production of sulfuric acid is |
| A. | sulfur |
| B. | air |
| C. | water |
| D. | all of them |
| Answer» E. | |
| 4. |
Each carbon atom forms four covalent bonds with other carbon atoms arranging them tetrahedral in |
| A. | graphite |
| B. | diamond |
| C. | silicon |
| D. | brass |
| Answer» C. silicon | |
| 5. |
Electrical conductivity of calcium is much higher than any |
| A. | transition element |
| B. | noble gas |
| C. | alkali |
| D. | acids |
| Answer» B. noble gas | |
| 6. |
Formula of benzene is |
| A. | C6H6 |
| B. | C2H6 |
| C. | C6H12 |
| D. | CH |
| Answer» B. C2H6 | |
| 7. |
Rate of reaction is change in amount of reactants or products in specific |
| A. | volume |
| B. | density |
| C. | time |
| D. | area |
| Answer» D. area | |
| 8. |
Decolorisation of bromine water will occur, on mixing it with |
| A. | ethene |
| B. | benzene |
| C. | propene |
| D. | butene |
| Answer» B. benzene | |
| 9. |
Number of atoms in same element has same number of |
| A. | protons |
| B. | electrons |
| C. | neutrons |
| D. | All of Above |
| Answer» B. electrons | |
| 10. |
Every substance in our world is made up of |
| A. | matter |
| B. | electrons |
| C. | protons |
| D. | chemical elements |
| Answer» E. | |
| 11. |
1.6x10-19C is charge on single |
| A. | electron (e-) |
| B. | proton (p+) |
| C. | neutron (n0) |
| D. | positron (e+) |
| Answer» B. proton (p+) | |
| 12. |
Atomic number is number of |
| A. | protons (p+) |
| B. | electrons (e-) |
| C. | neutrons (n0) |
| D. | nucleons (p+ and n0) |
| Answer» B. electrons (e-) | |
| 13. |
Number of times a p+ is heavier than an e- is |
| A. | 18 times |
| B. | 184 times |
| C. | 200 times |
| D. | 1840 times |
| Answer» E. | |
| 14. |
In Hydrogen atom, energy of first excited state is – 3.4 eV. Then find out KE of same orbit of Hydrogen atom. [CBSE AIPMT 2002] |
| A. | + 3.4 eV |
| B. | + 6.8 eV |
| C. | – 13.6 eV |
| D. | + 13.6 eV |
| Answer» B. + 6.8 eV | |
| 15. |
The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately (Planck's constant h = 6.63 × 10–34 Js] [AIEEE 2003] |
| A. | 10–33 metre |
| B. | 10–31 metre |
| C. | 10–16 metre |
| D. | 10–25 metre |
| Answer» B. 10–31 metre | |
| 16. |
Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers, l = 1 and 2 are, respectively: [AIEEE 2004] |
| A. | 12 and 4 |
| B. | 12 and 5 |
| C. | 16 and 4 |
| D. | 16 and 5 |
| Answer» C. 16 and 4 | |
| 17. |
Which one of the following sets of ions represents a collection of isoelectronic species? [AIEEE 2006] |
| A. | K+, Cl–, Ca2+, Sc3+ |
| B. | Ba2+, Sr2+, K+, S2– |
| C. | N3–, O2–, F–, S2–N3–, O2–, F–, S2– |
| D. | Li+, Na+, Mg2+, Ca2+ |
| Answer» B. Ba2+, Sr2+, K+, S2– | |
| 18. |
Mg2+ is isoelectronic with [Karnataka CET 2007] |
| A. | Ca2+ |
| B. | Na+ |
| C. | Zn2+ |
| D. | Cu2+ |
| Answer» C. Zn2+ | |
| 19. |
Ionisation energy of He+ is 19.6 ´ 10–18 J atom–1. The energy of the first stationary state (n = 1) of Li2+ is [AIEEE 2010] |
| A. | 4.41 ´ 10–16 J atom–1 |
| B. | –4.41 ´ 10–17 J atom–1 |
| C. | –2.2 ´ 10–15 J atom–1 |
| D. | 8.82 ´ 10–17 J atom–1 |
| Answer» C. –2.2 ´ 10–15 J atom–1 | |
| 20. |
The energy required to break one mole of Cl – Cl bonds in Cl2 is 242 kJ mol–1. The longest wavelength of light capable of breaking a single Cl – Cl bond is
(c = 3 ´ 108 ms–1 and NA = 6.02 ´ 1023 mol–1) [AIEEE 2010] |
| A. | 594 nm |
| B. | 640 nm |
| C. | 700 nm |
| D. | 494 nm |
| Answer» E. | |
| 21. |
The electronic transitions from n = 2 to n = 1 will produce shortest wavelength in (where n = principal quantum state) [West Bengal JEE 2011] |
| A. | Li+2 |
| B. | He+ |
| C. | H |
| D. | H+ |
| Answer» B. He+ | |
| 22. |
The energy of an electron in first Bohr orbit of H-atom is –13.6 eV. The possible energy value of electron in the excited state of Li2+ is [West Bengal JEE 2011] |
| A. | – 122.4 eV |
| B. | 30.6 eV |
| C. | – 30.6 eV |
| D. | 13.6 eV |
| Answer» D. 13.6 eV | |
| 23. |
A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at: [AIEEE 2011]A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at: [AIEEE 2011] |
| A. | 518 nm |
| B. | 1035 nm |
| C. | 325 nm |
| D. | 743 nm |
| Answer» E. | |
| 24. |
The work function (f) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is [IIT JEE 2011]
|
||||||||||||||||||||
| A. | 4 | ||||||||||||||||||||
| B. | 6 | ||||||||||||||||||||
| C. | 8 | ||||||||||||||||||||
| D. | 12 | ||||||||||||||||||||
| Answer» B. 6 | |||||||||||||||||||||
| 25. |
Identify the wrong statement in the following [CBSE AIPMT 2012] |
| A. | Atomic radius of the elements increases as one moves down the first group of the periodic table |
| B. | Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the |
| C. | Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius |
| D. | Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius |
| Answer» D. Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius | |
| 26. |
The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is [CBSE AIPMT 2012] |
| A. | 5, 0, 0, + 1/2 |
| B. | 5, 1, 0, +1/2 |
| C. | 5, 1, 1, +1/2 |
| D. | 6, 0, 0, + 1/2 |
| Answer» B. 5, 1, 0, +1/2 | |
| 27. |
Maximum number of electrons in a subshell with l = 3 and n = 4 is [CBSE AIPMT 2012] |
| A. | 10 |
| B. | 12 |
| C. | 14 |
| D. | 16 |
| Answer» D. 16 | |
| 28. |
The total number of nucleons in the nucleus is called _________ |
| A. | Atomic number |
| B. | Mass number |
| C. | Electric charge |
| D. | Periodic number |
| Answer» C. Electric charge | |
| 29. |
Number of protons in the nucleus is called ___________ |
| A. | Atomic number |
| B. | Mass number |
| C. | Electric charge |
| D. | Periodic number |
| Answer» B. Mass number | |
| 30. |
Nucleus consists of two sub-particles known as? |
| A. | Nucleotides |
| B. | Nucleons |
| C. | Neutrons |
| D. | Nucleosides |
| Answer» C. Neutrons | |
| 31. |
What is the most attractive part of nuclear energy? |
| A. | Supports countries development |
| B. | Causes no pollution |
| C. | Has high efficiency of energy production |
| D. | Is available in abundance |
| Answer» C. Has high efficiency of energy production | |